Using this ZTE IMEI unlock code there is no need for flashing the phone, no software, no cables. With new ZTE phones it’s usually as easy as just putting in your new SIM and the phone will prompt you for the unlock code. ZTE ZMAX Unlock SIM – it’s really that easy! If you’re a power user and have flashed your phone’s firmware – you will need to flash back to the stock ROM in order for the code to work. Once you’ve flashed back to the stock ROM – enter your unlock code and then flash back to whatever custom firmware you choose. ZTE ZMAX Unlock SIM for free with TrialPay!